Optical constants of CDGM - ZLAF (Dense lanthanum flint)
H-ZLAF89L
Wavelength:
µm
(0.360 – 2.400)
Complex refractive index (n+ik)
n
k
LogX
LogY
eV
Derived optical constants
Dispersion formula
$$n^2-1=\frac{2.33250033λ^2}{λ^2-0.0127519393}+\frac{0.338027439λ^2}{λ^2-0.0535631807}+\frac{1.63568735λ^2}{λ^2-114.949418}$$Conditions & Spec sheet
n_absolute: false
wavelength_vacuum: false
temperature: 20.0 ℃
thermal_dispersion:
- type: "Schott formula"
coefficients: -4.45e-07 1.4e-08 -3.45e-11 9.44e-07 1.04e-09 0.253
nd: 1.953750
Vd: 32.308790
glass_code: 954323
density: 5.1 g/cm3
thermal_expansion:
- temperature_range: -30 70 ℃
coefficient: 7.2e-06 K-1
- temperature_range: 20 300 ℃
coefficient: 8.8e-06 K-1
dPgF: -0.0001
climatic_resistance: 1.0
References
CDGM Zemax catalog 2022-06 (obtained from http://www.cdgmgd.com)
See also CDGM optical glass data sheets